private Stream LoadAttachmentDocument(bool isLoadingStream, out RightsManagedMessageDecryptionStatus decryptionStatus)
{
decryptionStatus = RightsManagedMessageDecryptionStatus.Success;
StringBuilder stringBuilder = new StringBuilder();
List <AttachmentId> list = new List <AttachmentId>();
UserContext userContext = this.owaContext.UserContext;
string queryStringParameter = Utilities.GetQueryStringParameter(this.owaContext.HttpContext.Request, "ewsid", false);
bool flag = string.IsNullOrEmpty(queryStringParameter);
OwaStoreObjectId owaStoreObjectId;
string text;
if (!flag)
{
stringBuilder.Append("service.svc/s/GetFileAttachment?id=");
stringBuilder.Append(Utilities.UrlEncode(queryStringParameter));
string canary15CookieValue = Utilities.GetCanary15CookieValue();
if (canary15CookieValue != null)
{
stringBuilder.Append("&X-OWA-CANARY=" + canary15CookieValue);
}
IdHeaderInformation idHeaderInformation = ServiceIdConverter.ConvertFromConcatenatedId(queryStringParameter, BasicTypes.Attachment, list);
owaStoreObjectId = OwaStoreObjectId.CreateFromMailboxItemId(idHeaderInformation.ToStoreObjectId());
text = owaStoreObjectId.ToString();
}
else
{
text = Utilities.GetQueryStringParameter(this.owaContext.HttpContext.Request, "id");
owaStoreObjectId = OwaStoreObjectId.CreateFromString(text);
stringBuilder.Append("attachment.ashx?attach=1&id=");
stringBuilder.Append(Utilities.UrlEncode(text));
}
Stream result;
using (Item item = Utilities.GetItem <Item>(userContext, owaStoreObjectId, new PropertyDefinition[]
{
ItemSchema.SentRepresentingDisplayName,
ItemSchema.Subject
}))
{
if (!Utilities.IsPublic(item) && userContext.IsIrmEnabled && isLoadingStream)
{
item.OpenAsReadWrite();
}
if (Utilities.IsIrmRestricted(item))
{
if (!userContext.IsIrmEnabled || userContext.IsBasicExperience)
{
decryptionStatus = RightsManagedMessageDecryptionStatus.FeatureDisabled;
return(null);
}
RightsManagedMessageItem rightsManagedMessageItem = (RightsManagedMessageItem)item;
if (!rightsManagedMessageItem.CanDecode)
{
decryptionStatus = RightsManagedMessageDecryptionStatus.NotSupported;
return(null);
}
try
{
Utilities.IrmDecryptIfRestricted(item, userContext, true);
}
catch (RightsManagementPermanentException exception)
{
decryptionStatus = RightsManagedMessageDecryptionStatus.CreateFromException(exception);
return(null);
}
catch (RightsManagementTransientException exception2)
{
decryptionStatus = RightsManagedMessageDecryptionStatus.CreateFromException(exception2);
return(null);
}
}
this.messageFrom = ItemUtility.GetProperty <string>(item, ItemSchema.SentRepresentingDisplayName, string.Empty);
this.messageSubject = ItemUtility.GetProperty <string>(item, ItemSchema.Subject, string.Empty);
this.messageId = text;
if (flag)
{
Utilities.FillAttachmentIdList(item, this.owaContext.HttpContext.Request, list);
}
using (StreamAttachment streamAttachment = Utilities.GetAttachment(item, list, userContext) as StreamAttachment)
{
if (streamAttachment == null)
{
throw new OwaInvalidRequestException("Attachment is not a stream attachment");
}
this.mimeType = (streamAttachment.ContentType ?? streamAttachment.CalculatedContentType);
this.fileName = ((!string.IsNullOrEmpty(streamAttachment.DisplayName)) ? streamAttachment.DisplayName : streamAttachment.FileName);
this.fileSize = streamAttachment.Size;
this.documentPath = this.fileName;
this.documentIdStringBuilder.Append(Convert.ToBase64String(userContext.MailboxSession.MailboxOwner.MailboxInfo.GetDatabaseGuid().ToByteArray()));
this.documentIdStringBuilder.Append("-");
for (int i = 0; i < list.Count; i++)
{
this.documentIdStringBuilder.Append(list[i].ToBase64String());
this.documentIdStringBuilder.Append("-");
if (flag)
{
stringBuilder.Append("&attid");
stringBuilder.Append(i.ToString(CultureInfo.InstalledUICulture));
stringBuilder.Append("=");
stringBuilder.Append(Utilities.UrlEncode(list[i].ToBase64String()));
}
}
if (flag)
{
stringBuilder.Append("&attcnt=");
stringBuilder.Append(list.Count);
}
this.documentIdStringBuilder.Append(streamAttachment.LastModifiedTime.UtcTicks);
this.openLink = stringBuilder.ToString();
if (isLoadingStream)
{
Stream contentStream = streamAttachment.GetContentStream();
MsoIpiResult msoIpiResult = MsoIpiResult.Unknown;
try
{
msoIpiResult = ProtectorsManager.Instance.IsProtected(this.fileName, contentStream);
}
catch (AttachmentProtectionException exception3)
{
decryptionStatus = new RightsManagedMessageDecryptionStatus(RightsManagementFailureCode.CorruptData, exception3);
return(null);
}
if (msoIpiResult == MsoIpiResult.Protected)
{
this.isIrmProtected = true;
contentStream.Dispose();
if (!userContext.IsIrmEnabled || userContext.IsBasicExperience)
{
decryptionStatus = RightsManagedMessageDecryptionStatus.FeatureDisabled;
result = null;
}
else
{
UseLicenseAndUsageRights useLicenseAndUsageRights;
bool flag2;
Stream stream;
try
{
stream = StreamAttachment.OpenRestrictedAttachment(streamAttachment, this.owaContext.ExchangePrincipal.MailboxInfo.OrganizationId, this.owaContext.ExchangePrincipal.MailboxInfo.PrimarySmtpAddress.ToString(), this.owaContext.LogonIdentity.UserSid, this.owaContext.ExchangePrincipal.RecipientTypeDetails, out useLicenseAndUsageRights, out flag2);
}
catch (RightsManagementPermanentException exception4)
{
decryptionStatus = RightsManagedMessageDecryptionStatus.CreateFromException(exception4);
return(null);
}
catch (RightsManagementTransientException exception5)
{
decryptionStatus = RightsManagedMessageDecryptionStatus.CreateFromException(exception5);
return(null);
}
if (flag2 && ObjectClass.IsMessage(item.ClassName, false) && !Utilities.IsIrmRestricted(item))
{
object obj = item.TryGetProperty(MessageItemSchema.IsDraft);
if (obj is bool && !(bool)obj && !DrmClientUtils.IsCachingOfLicenseDisabled(useLicenseAndUsageRights.UseLicense))
{
streamAttachment[AttachmentSchema.DRMRights] = useLicenseAndUsageRights.UsageRights;
streamAttachment[AttachmentSchema.DRMExpiryTime] = useLicenseAndUsageRights.ExpiryTime;
using (Stream stream2 = streamAttachment.OpenPropertyStream(AttachmentSchema.DRMServerLicenseCompressed, PropertyOpenMode.Create))
{
DrmEmailCompression.CompressUseLicense(useLicenseAndUsageRights.UseLicense, stream2);
}
streamAttachment[AttachmentSchema.DRMPropsSignature] = useLicenseAndUsageRights.DRMPropsSignature;
streamAttachment.Save();
item.Save(SaveMode.ResolveConflicts);
}
}
string conversationOwnerFromPublishLicense = DrmClientUtils.GetConversationOwnerFromPublishLicense(useLicenseAndUsageRights.PublishingLicense);
RmsTemplate rmsTemplate = RmsTemplate.CreateFromPublishLicense(useLicenseAndUsageRights.PublishingLicense);
this.isPrintRestricted = !useLicenseAndUsageRights.UsageRights.IsUsageRightGranted(ContentRight.Print);
this.isCopyRestricted = !useLicenseAndUsageRights.UsageRights.IsUsageRightGranted(ContentRight.Extract);
SanitizingStringBuilder <OwaHtml> sanitizingStringBuilder = new SanitizingStringBuilder <OwaHtml>();
string str = string.Format(LocalizedStrings.GetNonEncoded(-500320626), rmsTemplate.Name, rmsTemplate.Description);
sanitizingStringBuilder.Append(str);
if (!string.IsNullOrEmpty(conversationOwnerFromPublishLicense))
{
sanitizingStringBuilder.Append("<br>");
sanitizingStringBuilder.Append(string.Format(LocalizedStrings.GetNonEncoded(1670455506), conversationOwnerFromPublishLicense));
}
this.irmInfobarMessage = sanitizingStringBuilder.ToSanitizedString <SanitizedHtmlString>();
result = stream;
}
}
else
{
contentStream.Seek(0L, SeekOrigin.Begin);
result = contentStream;
}
}
else
{
result = null;
}
}
}
return(result);
}